Sipper cup lid



FIG. 1 is a front perspective view of my design for a sipper cup lid;

FIG. 2 is a front elevation view of the design of FIG. 1;

FIG. 3 is a rear elevation view of the design of FIG. 1;

FIG. 4 is a right side elevation view of the design of FIG. 1;

FIG. 5 is a top plan view of the design of FIG. 1; and,

FIG. 6 is a bottom view of the design of FIG. 1.

It is to be understood that a left side view of the design of FIG. 1 is a mirror image of FIG. 4. 

The ornamental design for a sipper cup lid, as shown and described. 